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(Solved) Assume that at a partial pressure of 100 mm Hg of oxygen in the lungs, as typically foundat sea level, oxygen will dissolve into blood to a...


Assume that at a partial pressure of 100 mm Hg of oxygen in the lungs, as typically foundat sea level, oxygen will dissolve into blood to a concentration of roughly 0.1 mM. If you climb a mountain to 6000 meters above sea level, the partial pressure of oxygen in thelungs decreases to 50 mm of Hg. According to Henry’s Law, what would the concentration of oxygen in blood be at this elevation?

a. 0 mM

b. 0.05 mM

c. 0.1 mM

d. 0.2 mM


At sea level, at a pressure of 1 Atm (= 760 mm Hg), O2 comprises ~21%of all air molecules. At 7,500 m above sea level, atmospheric pressure is0.4 Atm and O2 comprises

a. ~84% of air by weight

b. ~42% of all air molecules

c.~21% of all air molecules

d. ~8% of all air molecules


The tracheal system typically found in insects & most spiders

a. reduces or eliminates the need for bulk flow for moving oxygen & carbon dioxidethrough the bodies of small insects

b. works in part because oxygen diffuses through air dramatically faster than throughwater

c. provides an “all air” path from the air outside the body to the vicinity of each cell

d).All of the above are true

 


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